Boston Scientific

BSX · United States · Health Care Equipment · matched S&P 500 member. Follow its market-weight contribution.

Historical time machine

Historical observation

20182026

Universe weight

0.296%

12M weight contribution

+0.001 pp

3M weight contribution

-0.028 pp

12M price return

+12.0%

Share of matched S&P 500 members

Monthly observations through Nov 2025

Company price index

A separate dimension from market allocation

Historical observations

Most recent 24 observations at or before the selected month

Month	Market cap	Universe weight	12M weight change	12M return	Above 6M weight average
Nov 2025	$150.6bn	0.296%	+0.001 pp	+12.0%	No
Oct 2025	$149.2bn	0.292%	+0.002 pp	+19.9%	No
Sep 2025	$144.7bn	0.290%	+0.002 pp	+16.5%	No
Aug 2025	$156.3bn	0.324%	+0.033 pp	+29.0%	No
Jul 2025	$155.2bn	0.327%	+0.133 pp	+42.0%	No
Jun 2025	$158.9bn	0.343%	+0.130 pp	+39.5%	No
May 2025	$155.7bn	0.353%	+0.140 pp	+39.3%	Yes
Apr 2025	$151.8bn	0.365%	+0.059 pp	+43.1%	Yes
Mar 2025	$148.9bn	0.353%	+0.075 pp	+47.3%	Yes
Feb 2025	$153.2bn	0.343%	+0.064 pp	+56.8%	Yes
Jan 2025	$150.9bn	0.335%	+0.060 pp	+61.8%	Yes
Dec 2024	$131.6bn	0.299%	+0.046 pp	+54.5%	Yes
Nov 2024	$133.6bn	0.295%	+0.040 pp	+62.2%	Yes
Oct 2024	$123.7bn	0.291%	+0.036 pp	+64.1%	Yes
Sep 2024	$123.4bn	0.287%	+0.029 pp	+58.7%	Yes
Aug 2024	$120.4bn	0.291%	+0.039 pp	+51.6%	Yes
Jul 2024	$108.6bn	0.195%	+0.032 pp	+42.5%	No
Jun 2024	$113.2bn	0.212%	+0.032 pp	+42.4%	No
May 2024	$111.1bn	0.212%	+0.030 pp	+46.8%	No
Apr 2024	$105.4bn	0.305%	+0.053 pp	+37.9%	Yes
Mar 2024	$100.5bn	0.279%	+0.034 pp	+36.9%	Yes
Feb 2024	$97.1bn	0.278%	+0.043 pp	+41.7%	Yes
Jan 2024	$92.7bn	0.276%	+0.049 pp	+36.8%	Yes
Dec 2023	$84.7bn	0.253%	+0.013 pp	+24.9%	Yes

Its weight is estimated market cap divided by the total estimated market cap of matched S&P 500 members for the month. This is not an official float-adjusted S&P index weight.